On two points. First, the grid is in the process of converting to renewables. In fact, renewables are the second largest contribution to the grid, after natural gas, and ahead of coal and oil. Renewables are expected to surpass natural gas by 2030 at the latest. It's a long process but it is happening and will only accelerate as renewables become cheaper and cheaper in cost, and it debunks the rightwing talking point you parrot here about the grid running on fossil fuels.

Second, I grew up in Southern California in the 1970s. I remember getting bused for school from the southern edge of Pasadena 10 miles up to Altadena, to a school only a mile from the San Gabriel mountains. (Just imagine government trying to do a social experiment like school integration today? But that's another story.) On most days the smog was so bad you could not see the mountains from that school. Catalytic converters are an incredible success story for air quality in the L.A. basin, where everyone has a car. For decades now the air has been magnificently cleaner than when I was growing up.